skf-rs 0.8.1

Rust wrapper for GM/T 0016-2012(Smart token cryptography application interface specification).
Documentation 
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use skf_api::native::error::get_message;
use std::fmt::{Debug, Display, Formatter};
#[derive(thiserror::Error, Debug)]
pub enum Error {
    #[error(transparent)]
    InvalidArgument(#[from] InvalidArgumentError),
    #[error("`{0}`")]
    NotFound(String),
    #[error(transparent)]
    LibLoading(#[from] libloading::Error),
    #[error(transparent)]
    Skf(#[from] SkfErr),
    #[error(transparent)]
    PinVerifyFail(#[from] SkfPinVerifyError),
    #[error(transparent)]
    Other(#[from] anyhow::Error),
}

#[derive(thiserror::Error, Debug)]
pub struct InvalidArgumentError {
    msg: String,
    #[source]
    source: Option<anyhow::Error>,
}

impl InvalidArgumentError {
    pub fn new(msg: impl AsRef<str>, source: Option<anyhow::Error>) -> Self {
        Self {
            msg: msg.as_ref().to_string(),
            source,
        }
    }
}

impl Display for InvalidArgumentError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.msg)
    }
}

#[derive(Clone)]
pub struct SkfErr {
    pub code: u32,
    pub message: String,
}

impl SkfErr {
    pub fn new(code: u32, message: impl AsRef<str>) -> Self {
        Self {
            code,
            message: message.as_ref().to_string(),
        }
    }

    pub fn of_code(code: u32) -> Self {
        let message = get_message(code).unwrap_or("Unknown error");
        Self::new(code, message)
    }
}
impl std::error::Error for SkfErr {}

impl Display for SkfErr {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "[{:#010x}] - {}", self.code, &self.message)
    }
}

impl Debug for SkfErr {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
            "[{:#010x}({}) ] - {}",
            self.code, self.code, &self.message
        )
    }
}

#[derive(thiserror::Error, Debug)]
pub struct SkfPinVerifyError {
    pub remaining_retry_count: u32,
    pub message: String,
    #[source]
    source: SkfErr,
}

impl SkfPinVerifyError {
    pub fn new(count: u32, msg: impl AsRef<str>, source: SkfErr) -> Self {
        Self {
            remaining_retry_count: count,
            message: msg.as_ref().to_string(),
            source,
        }
    }
}

impl Display for SkfPinVerifyError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
            "{}(retry count: {})",
            self.message, self.remaining_retry_count
        )
    }
}